Caterpillar ARP Exhaust Manifold Stud Kit Caterpillar Exhaust Manifold Stud Kit Typically Fits the Following Caterpillar Engine Configurations and Years: C-11 11.1L (2003-2006) C-12 12.0L (1997-2003) C-13 12.5L (2004-2010) Includes Manifold Studs, Flat Washers, and Nuts ARP Built 2X as Strong as a S... See More